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CBI has arrested former Air Force Chief S P Tyagi in the 3600 crore Agusta Westland helicopter deal case. It has also arrested Tyagi's cousin Sanjiv Tyagi and a Delhi-based lawyer Gautam Khaitan.

The deal is related to purchase of 12 helicopters for VVIPs from Italian manufacturer, Finmeccanica in 2010 during UPA rule. AIR correspondents reports that Tyagi, who retired in 2007, was questioned by the CBI extensively in the past in this case. This is for first time a former IAF chief has been arrested by the central probe agency.

India had in 2014 scrapped the contract with Finmeccanica over alleged breach of contractual obligations and charges of paying kickbacks of 423 crore rupees by it for securing the deal. CBI had also got issued Letters Rogatory to multiple countries to gather more leads and evidences in this case.